Dump car



June 8, 1937. I J. P. ANDERSON DUMP CAR Filed April 23, 1929 3 Sheets-Sheet l INVENTOR AT WNHH ATTORNEY June 8, 1937. J, P, ANDE 2,083,136

INVENTOR ATTORNEY June 8, 1937.

J. P. ANDERSON DUMP GAR Filed April 23, 1929 s Sheets- Sheet s INVENTOR:

ATTORNEY Patented June 8, 1937 UNITED STATES 2,083,136 DUMP CAR John P. Anderson, Koppel, Pa assignor, by mesne assignments, to Pressed Steel Car Company, Inc., Pittsburgh, Pa., a corporation of Pennsylvania Application April 23, 1929, Serial No. 357,567

27 Claims.

My invention refers to dump cars known to the trade as rotary trunnion dump cars which are of the type in which the body rests directly on the underframe in stable equilibrium when the body is horizontal and the body rotates on the underframe during the first part of the dumping movement until the trunnions which are mounted on the sides of the body engage with the underframe and act as pivots about which the body turns in completing the dumping movement. Dump cars of this design combine the desirable feature of low center of gravity with the resultant great stability of dump cars in which the body is close to the underframe, with the ability to discharge the lading as far away as possible from the car tracks, which is obtained in the use of side trunnion dump cars.

An object of my invention is to provide a dump car with a body mounted directly on the underframe in stable equilibrium and having trunnions mounted near the sides thereof which engage with the underframe after the body begins to tilt and about which the body turns in completing the dumping movement.

Another object of my invention is to provide a locking means between the body and underframe which will prevent longitudinal and transverse movement of the body on the underframe when the body floor is horizontal and during the transporting of lading from one point to another.

A further object of the invention is to provide the underframe of the car with a plurality of supports adjacent the longitudinal center line thereof to maintain the body in load-carrying position and a plurality of supports spaced laterally therefrom to receive and support the body during its lateral tilting movement.

Referring now to the drawings, Fig. 1 is a transverse section through a dump car showing the method of mounting the body on the underframe and a preferred location of the trunnions near the sides of the body; Fig. 2 shows in elevation a portion of a dumpcar and illustrates the locking means; Fig. 3 is a transverse section through a dump car showing the body in final dumping position; Fig. 4 shows in elevation a portion of a dump car shown in tilted position in Fig. 3; Fig. 5 is a plan view of a portion of the underframe of a dumpcar showing one of the transverse body supporting members of the underframe and a method of locating the locking means on the underframe; Figs. 6, '7, and 8 show in detail the portion of the locking means mounted on the underframe; Figs. 9, 10, and 11 show in detail the portion of the locking means mounted on the body.

Referring now in detail to the drawings where like reference characters refer to like parts, reference character I indicates the body of a rotary trunnion dump car resting directly on the underframe 2 in stable equilibrium. Spaced longitudinally of the body and at each side of the center line thereof are transverse body supporting members 3 which are supported on transverse members 4 spaced longitudinally of the underframe. When the body is horizontal for loading and transporting lading the transverse members 3 of the body are in engagement with the transverse members 4 of the underframe. as shown in Figs. 1 and 2 of the drawings, and during the first part of the dumping movement these members 3 at one side of the body rotate about the portion 4 of the underframe members 4 until the trunnion members 5 mounted on the body engage with the suitable bearing portions mounted on the ends of the members 4. As shown in Fig. 1 of the drawings, the trunnion members 5 are mounted on the body members 3 and are free of the underframe when the body is in horizontal position, but it is to be understood that these trunnion members 5 and their bearing supports 6 need not be mounted on the members 3 and 4 but may be mounted in any suitable manner to meet the various conditions of dump car construction.

No means for tilting the body have been shown in the drawings, and it is to be understood that any of the means known to theprior art for dumping the body may be used, such as a motor mounted on the underframe. fiuid pressure operated cylinders mounted on the underframe. or the body may be tilted by manual effort.

The means for locking the body on the underframe when the body is horizontal may be located in one or more places longitudinally of the underframe, as shown in Fig. 2 of the drawings.

These locking means comprise a plurality of members 3, as shown in Fig. 6 and are mounted in pairs in spaced relation to each other transversely of the underframe, and on the body are mounted the members 9, as shown in Fig. 9 of the drawings, which are mounted in pairs transversely of the body and are shown in engagement with the members 8 by dot and dash lines in Fig. 5 of the drawings. These members 8 and 9 are secured to the underirame and body by fastening members passing through the openings 10 and the underirame and body. When the body is horizontal the portion R5 of the member 8 and portion M of the member 9 are in engagement with each other, as shown in Figs. 2 and 5 of the drawings and prevent transversemovement of the body with relation to the underframe and the portions l2 and I3 of the members 8 and 9 are in engagement with each other to prevent longitudinal movement of the body on the underframe. As shown in Figs. 7 and 10 of the drawings, the engaging portions l2 and I3 of the locking means are so formed thatthe member 9 when moving into or out of engage- "of engagement with the underfr-ame so that there ment with the member 8 will not bind on that member and prevent the free tilting movement of the body I.

Referring again to the drawings, Figs. 8 and 11 which are transverse sections through the locking members 8 and 9 show the engaging portions I4 and E5 of the locking means to beso formed that the member 9 can move freely into and out of engagement with the member S as the body rotates on the underfr-ame and the portions l4 and Iii are shown to be slightly rounded so as to facilitate the rotation of the member 9 on the member 8 as the body begins the dumping movement.

Referring now to Fig. l of the drawings, the body 'I is shown supported on the underframe instable equilibrium and the members 9 mounted on the body in engagement with the members 8 mounted on the underframe. The body is so held by these members 8 and 9 so as to prevent longitudinal or transverse movement of the 'bo'dy'on'the underframe and'the length of the transverse portionsof the members 3 and t in engagement witheach other prevent the body from tilting to either side of the underframe by "reason of the weight of the lading contained therein. When it is desired to tilt the body to one side'of the underframe, as shown in Fig. 3, the body is rotated about the members 4 of the underframe at the left side thereof until the trunnion members 5 on the left side of the underirame engage with the bearing member 6 and the transverse members 3 and 2 move out of contact with each other as the body completes its dumping movement about the trunnions 5.

"During the timethe body is rotating about the underframe on the members 3 and A the portions Hi of the locking means 9 mounted on the body'are rotating about the portions i5 of the locking means 8 mounted on the underframe and as the dumping movement continues these members 8 and '9 move out of contact with each other before the trunnion members 5 engage with their bearing supports 6 and in this manner prevent any possibility of the locking means interferingwith-the dumping movement of the bod "VeT hen the body is returned to a horizontal position thereverse movement takes place and the body rotates about the trunnion members 5 until the members 8 again come into contact with the members A of the underframe and the body "completes its return through the rotation of the members 3 on the members 4 until it again assumesahorizontal position and the members 9 engage with the members '8 mounted on the un'derframe.

As shown in Fig.2, the members 8 and 9 do not contribute to the supporting of the body on the underframe and the members 9 are out is no possibility of these locking means preventing the free rotation of the body.

Throughout the description the locking members 8 and 9 have been stated to be mounted in pairs on the underframe and body but it is to be understood that these pairs of members may be made in one piece to meet the various requirements of dump car design. In Fig. 5 of the drawings the two members 8 can be made in one piece and the two: members '9 engaging with those members may be made in one piece also Without departing from the purpose and scope of my invention.

-I-Iaving thus described -my invention what I claim as new and desire to secure by Letters Patent is:

1. In a dump car, an underframe, a tiltably mountedbody, a plurality of transverse stiffening members on said underframe, a plurality of "transverse stiiiening members beneath said body superposed on said underframe members, said members maintaining the body in stable equilibrium, transversely spaced suitably formed portions on said members about which the body rolls dun'ng'the initial dumping movement, and trunnions spaced outwardly of said portions about which the body turns to complete the dumping movement.

2. The combination in a dump car having a tiltablebody, of superposed transverse members supporting the body in stable equilibrium, one of said members being secured beneath the body and having an end portion serving as a rocker upon which the body beginsits tilting movement and a trunnion member secured to the body and spaced outwardly of the rocker formed on said transverse member, said trunnion member being spaced from the underframe when the body is in load carrying position and engaging with the underframe after the body begins to tilt to form a pivot about which'the body completes the dumping movement.

3. The combination in a dump car having a tiltable-body, of a double bearing about which the body tilts in dumping, comprising superposed transverse members supporting the body in stable equilibrium, one of said members rolling on the other to provide the initial tilting movement of said body and a final tilting trunnion beneath-said body spaced outwardly from said superposed portion of the transverse member and spaced from the plane of engagement of said transverse members.

4. In a dump car, an underframe, a body supported directly on said underframe in stable equilibrium, a plurality of transverse bearing surfaces along the longitudinal center of said body in engagement with said underframe, trunnions mounted at each side of said body and normally free of the underfra-me, means mounted at the longitudinal center of said body and underframe, said means engaging with each other when the body is horizontal to prevent longitudinal and transversemovement between the body and underframe, said trunnions engaging with the underframe after the body begins to tilt and forming pivots about which the body turns in dumping.

5. In a dump car, an underframe, a dump body supported directly on said underframe in stable equilibrium, trunnions mounted at the side of said body normally free of the underframe, said trunnions engaging with the underframe after the body begins to tilt and forming pivots about which the body turns in dumping, a plurality of suitably formed stop members mounted in pairs longitudinally of the underframe, and a plurality of suitably formed members mounted on the body and engaging with said stop members when the body/is in horizontal position, said members mounted on the body passing out of engage ment with the members mounted on the underframe before the trunnion members of the body engage with the underframe as the body moves in dumping.

6. In a dump car an underframe, a body 'mounted for lateraldumping movement thereon,

a plurality of superposed transverse members :spaced longitudinally of .said underframe and in stable equilibrium,

beneath said body for maintaining said body in stable equilibrium, independent bearings mounted adjacent the ends of Said members, said bearings supporting said body during the final dumping movement.

'7. In a dump car an underframe, a body mounted for lateral dumping movement thereon, a plurality of transverse members spaced longitudinally of said underirame and beneath said body for maintaining the body in stable equilibrium, a plurality of bearing surfaces on each of said members about which the body progressively moves to dumped position and fixed bearings spaced outwardly of Said first-mentioned bearing surfaces and beneath said body providing pivotal supports for the body during the final dumping movement.

8. In a dump car having a tiltable body mounted in stable equilibrium, the combination of an underframe, a body, transversely spaced bearings on the body beneath the floor thereof about which the body rolls in dumping and bearings spaced outwardly of said first-mentioned bearings about which the body pivots to final dumping position, the latter-mentioned bearings being below the horizontal plane of the firstmentioned bearings.

9. In a dump carhaving a tiltably mounted body, the combination of an underirame, a body, transverse beari g members disposed beneath said body and engaging the underframe at the mid portion thereof and on opposite Sides of said portion, said bearing members having their outer portions disposed below the plane of their mid portion, said body turning upon said outer portions during the initial dumping movement and independent bearings spaced outwardly of said transverse members about which the body completes the dumping movement.

10. In a dump car the combination with the body and underframe thereof, of a bearing beneath the body and adjacent each side of the car, upon which the body moves in dumping, said bearing inwardly of the car, providing a support for the body in upright position, an intermediate portion upon which the body has an initial rolling movement as the body tilts to- Wards the side of the car, and an outwardly spaced portion upon which the body pivots to final tilted position, the intermediate portion providing a support for the tilting body outwardly of the portion supporting the body in stable equilibrium and above the portion upon which the body pivots.

11. In a dump car, in combination, an underframe, a tiltably mounted body, bearings adjacent the sides of the car beneath the body upon which the body moves in dumping, the inner portion of said bearings supporting the body intermediate portions spaced outwardly of the first named portions upon which the body has an appreciable initial rolling movement and portions spaced outwardly thereof upon which the body pivots into fully tilted position.

. 12. In a dump car, in combination, an underframe, a body tiltably mounted on the underframe, transversely spaced bearings on the underframe beneath the body upon which the body has an initial dumping movement and bearings spaced outwardly of said first-mentioned bearings and beneath the body upon which the body pivots to fully dumped position, said bearings providing a compound transverse roll and final pivotal movement to the body.

13. In a dump car provided with a tilting body, the combination of superposed transverse members forming parts of the body and underframe and having spaced portions retaining the body in stable equilibrium, suitably shaped portions on the body members for moving upon the underframe member during the initial tilting movement of the body, and trunnions secured beneath the body uponwhich the body completes its tilting movement about said underframe member.

14. In a dump car provided with a tilting body, the combination of superposed transverse members forming parts of the underframe and body load-carrying structure, portions of said members spaced in a direction transverse of the car being in engagement to retain the body in stable equilibrium, a rocker disposed beneath the body and associated with the body member, a trunnion associated with the body member in spaced relation to the portion thereof retaining the body in stable equilibrium, and a bearing for said trunnion disposed on the underframe below the horizontal plane of the outermost support of the body in stable equilibrium.

15. In a dump car having a tiltable body in combination, an underframe, a body, a plurality of transverse framing members on the body and underframe, spaced bearing surfaces on said members being in engagement to support the body in stable equilibrium when horizontal, a rocker adjacent one end of a body member about which the body moves upon the adjacent underframe member, a trunnion secured beneath the body, a bearing for said trunnion secured to one of said underframe members, said bearings being disposed beneath the horizontal plane of the body rocker bearing and providing a pivotal support for the body in moving to fully dumped posi-- tion.

16. In a dump car, in combination, an underfrarne,'a body, a plurality of laterally spaced bearing surfaces disposed longitudinally of the car beneath the body and engaging the underframe to support the body in stable equilibrium, a plurality of trunnions disposed beneath the body outwardly of said bearing surfaces, bearings on the underframe for said body trunnions, said underframe bearings being disposed beneath the horizontal plane of the outermost support for the body in stable equilibrium, and rocker bearings on the body, intermediate said trunnions and adjacent body bearings adapted to engage the underframe to support the body in rolling from stable equilibrium to said trunnions during the dumping movement.

17. In a dump car, in combination, a body of substantially rectangular shape, bearings beneath the body and disposed adjacent each side of the'underframe, each of Said bearings comprising a body portion and an underframe portion, each portion comprising a support for the body in stable equilibrium, a support spaced outwardly thereof upon which the body rolls during the initial dumping movement and an outer support upon whichthe body pivots to fully dumped position.

18. In a dump car, in combination, an underframe, a tiltable body, a plurality of transverse stiffening members on the underframe, a plurality of transverse stiffening members beneath the body and superposed on said underframe members to support the body in stable equilibrium, bearings on the body members, spaced from the underframe members, and adapted to engaging the underframe members to support the body in stable equilibrium, rocker bearings on the body members in laterally spaced relation to said supporting portions and normally spaced from the underframe members providing a rolling support for the body upon said latter members during initial movements of the body, trunnions on said body members spaced laterally of the rocker bearings, bearings for said trunnions upon said underframe members and disposed below the plane of engagement of the rocker bearings, said trunnions providing supports upon which the body pivots to fully dumped position.

20. In a dump car, in combination, an underframe, a lading body, supporting bearings beneath the body, spaced laterally thereof and in engagement with the underframe so that the inner portion of each bearing supports the body in stable equilibrium, a second portion spaced outwardly of the first supports the body during the initial tilting movement of the body and a third and outermost portion provides a pivot upon which the body completes the dumping movement.

21. In a dump car having a tiltable body, an underframe, and a plurality of laterally disposed framing members on the body and underirame, the-combination therewith of body supporting bearings secured beneath the body on opposite sides of the longitudinal centerline thereof and comprising an inner portion engaging an underframe member to retain the body in stable equilibrium, an intermediate portion upon which the body rolls during the initial dumping movement and an outer portion upon which the body pivots to fully dumped position, the bearing for the pivoting portion being disposed in a horizontal plane below the bearing for the inner portion.

22. In a dump car having a tiltable body, an underframe, and a plurality of laterally disposed framing members on the body and underframe, the combination therewith of body supporting bearings secured beneath the body on opposite sides of the longitudinal centerline thereof and comprising an inner portion engaging an underframe member to retain the body in stable equilibrium, an intermediate portion upon which. the body rolls during the initial dumping movement and an outer portion upon which the body pivots to fully dumped position, the bearings for the pivoting portion being disposed below the bearing for said intermediate portion.

23. In a dump car, the combination of an underframe, a tiltable body, transverse superposed members forming lading supporting portions of the body and underframe which retain the body in stable equilibrium, a trunnion member disposed beneath the body, a bearing for the trunnion upon the underframe, one of said transverse body members rolling upon an underframe member during the initial tilting movement of the body after which the trunnion engages with the underframe to provide a pivot upon which the body turns to fully dumped position.

24. In a dump car, in combination, an underframe, a tiltable body, laterally spacedbearings beneath the body upon which the body moves in dumping, each bearing having an inner portion supporting the body in stable equilibrium, an intermediate portion upon which the body has an appreciable initial rolling movement and an outer portion upon which the body pivots into fully dumped position, the latter portion being in a plane diiferent from said intermediate portion.

25. In a dump car, an underframe including a longitudinally extending sill structure and framing members extending laterally from each side thereof, a body including longitudinally spaced transversely disposed framing members supported by said sill structure when the body is in upright position, bearings on a plurality of said H body framing members adjacent the ends thereof and engaging the laterally extending underirame members to support the body when in upright position and during tilting, said bearings having an inner portion engaging the underiraine when the body is in upright position, an intermediate portion forming a rocker upon which the body rolls during the initial dumping movement and an outer portion forming a trunnion upon which the body pivots in completing the dumping movement.

26. In a dump car, an underframe including a longitudinally extending sill structure and framing members extending laterally from each side thereof, a body includinglongitudinally spaced transversely disposed framing members supported by sill structure when the body is in upright position, hearings on a plurality of said body framing members adjacent the ends thereof and engaging the laterally extending underfranie members to support the body when in upright position and during tilting, said bearings having an inner portion engaging the underframe when the body is in upright position, an intermediate portion forming a rocker upon which the body rolls during the initial dumping movement and an outer portion forming a trunnion upon which the body pivots in completing the dumping movement, said trunnion forming a tilting axis for the body below the tilting axis of the rolling body.

27. A dump car comprising an underframe, a tilting body mounted on said underframe and normally supported in stable equilbrium thereon, said body comprising longitudinally extending side rails, a plurality of spaced transversely extending beams secured to said side rails and adapted in the normal position of said body to rest directly on said underframe, means for tilting the body, and co-acting pivot devices associated with said transver ely extending beam members and with said underframe and arranged for shifting the pivotal center of said body outwardly with respect to said underframe during the dumping operation, said co-acting pivot devices including a rocker upon which the body rolls during the initial dumping movement and a trunnion upon which the body pivots in completing the dumping movement.

JOHN P. ANDERSON. 

